I feel your pain I had this problem when I first tried to download the update to plazmic and I had to end up contacting plazmic support through their website! They emailed me back and asked me a bunch of questions as far as settings on my computer ect and they ended up fixing it after a couple emails I hope when 4.7 comes out I won't go through this again. But my suggestion would be to contact plazmic support.
~via smartphone~